index 1250052..13152f2 100644 (file)
@@ -3,7 +3,7 @@
*/

/*
- *  GiNaC Copyright (C) 1999-2005 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

+#include "ginac.h"
+using namespace GiNaC;

-#include "exams.h"
+#include <iostream>
+using namespace std;

#define VECSIZE 30
static unsigned exam_expand_subs()
@@ -93,7 +96,7 @@ static unsigned exam_sqrfree()
ex e1, e2;

e1 = (1+x)*pow((2+x),2)*pow((3+x),3)*pow((4+x),4);
-       e2 = sqrfree(expand(e1),lst(x));
+       e2 = sqrfree(expand(e1),lst{x});
if (e1 != e2) {
clog << "sqrfree(expand(" << e1 << ")) erroneously returned "
<< e2 << endl;
@@ -107,19 +110,19 @@ static unsigned exam_sqrfree()
<< e2 << endl;
++result;
}
-       e2 = sqrfree(expand(e1),lst(x));
+       e2 = sqrfree(expand(e1),lst{x});
if (e1 != e2) {
clog << "sqrfree(expand(" << e1 << "),[x]) erroneously returned "
<< e2 << endl;
++result;
}
-       e2 = sqrfree(expand(e1),lst(y));
+       e2 = sqrfree(expand(e1),lst{y});
if (e1 != e2) {
clog << "sqrfree(expand(" << e1 << "),[y]) erroneously returned "
<< e2 << endl;
++result;
}
-       e2 = sqrfree(expand(e1),lst(x,y));
+       e2 = sqrfree(expand(e1),lst{x,y});
if (e1 != e2) {
clog << "sqrfree(expand(" << e1 << "),[x,y]) erroneously returned "
<< e2 << endl;
@@ -161,7 +164,7 @@ static unsigned exam_operator_semantics()
++result;
}

-       // Prefix/postfix increment/decrement behaviour:
+       // Prefix/postfix increment/decrement behavior:
e1 = 7; e2 = 4;
i1 = 7; i2 = 4;
e1 = (--e2 = 2)++;
@@ -216,6 +219,15 @@ static unsigned exam_subs()
++result;
}

+       // And this used to fail in GiNaC 1.5.8 because it first substituted
+       // exp(x) -> exp(log(x)) -> x, and then substituted again x -> log(x)
+       e1 = exp(x);
+       e2 = e1.subs(x == log(x));
+       if (!e2.is_equal(x)) {
+               clog << "exp(x).subs(x==log(x)) erroneously returned " << e2 << " instead of x" << endl;
+               ++result;
+       }
+
e1 = sin(1+sin(x));
e2 = e1.subs(sin(wild()) == cos(wild()));
if (!e2.is_equal(cos(1+cos(x)))) {
@@ -249,18 +261,40 @@ static unsigned exam_subs_algebraic()
unsigned result = 0;
symbol x("x"), y("y");

-       ex e = ex(x*x*x*y*y).subs(x*y==2, subs_options::subs_algebraic);
+       ex e = ex(x*x*x*y*y).subs(x*y==2, subs_options::algebraic);
if (e != 4*x) {
-               clog << "(x^3*y^2).subs(x*y==2,subs_options::subs_algebraic) erroneously returned " << e << endl;
+               clog << "(x^3*y^2).subs(x*y==2,subs_options::algebraic) erroneously returned " << e << endl;
++result;
}

-       e = ex(x*x*x*x*x).subs(x*x==y, subs_options::subs_algebraic);
+       e = ex(x*x*x*x*x).subs(x*x==y, subs_options::algebraic);
if (e != y*y*x) {
-               clog << "x^5.subs(x^2==y,subs_options::subs_algebraic) erroneously returned " << e << endl;
+               clog << "x^5.subs(x^2==y,subs_options::algebraic) erroneously returned " << e << endl;
++result;
}
-
+
+       e=x*x*y;
+       if (!e.has(x*y, has_options::algebraic))
+       {       clog << "(x^2*y).has(x*y, has_options::algebraic) erroneously returned false." << endl;
+               ++result;
+       }
+
+       if (e.has(x*y*y, has_options::algebraic))
+       {       clog << "(x^2*y).has(x*y*y, has_options::algebraic) erroneously returned true." << endl;
+               ++result;
+       }
+
+       e=x*x*x*y;
+       if (!e.has(x*x, has_options::algebraic))
+       {       clog << "(x^3*y).has(x*x, has_options::algebraic) erroneously returned false." << endl;
+               ++result;
+       }
+
+       if (e.has(y*y, has_options::algebraic))
+       {       clog << "(x^3*y).has(y*y, has_options::algebraic) erroneously returned true." << endl;
+               ++result;
+       }
+
return result;
}

@@ -269,7 +303,6 @@ unsigned exam_misc()
unsigned result = 0;

cout << "examining miscellaneous other things" << flush;
-       clog << "----------miscellaneous other things:" << endl;

result += exam_expand_subs();  cout << '.' << flush;
result += exam_expand_subs2();  cout << '.' << flush;
@@ -280,12 +313,10 @@ unsigned exam_misc()
result += exam_joris(); cout << '.' << flush;
result += exam_subs_algebraic(); cout << '.' << flush;

-       if (!result) {
-               cout << " passed " << endl;
-               clog << "(no output)" << endl;
-       } else {
-               cout << " failed " << endl;
-       }
-
return result;
}
+
+int main(int argc, char** argv)
+{
+       return exam_misc();
+}